Window stop



June 7, 1949. R. J. KASIK WINDOW STOP Filed July 8, 1947 IN VEN TOR.

Patented June 7, 1949 UNITED STATES FATENT OFFICE WINDOW STOP Robert J.Kasik, Chicago, Ill. Application July 8, 1947, Serial No. 759,564

6 Claims.

This invention relates generally to window stops and more particularlyto a window stop which may be selectively positioned on a window.

In the prior art many attempts have been made to provide a window stopor sash lock which will be effective to prevent a window which ispartially open from being further opened by someone from the outside.Various arrangements have been devise wherein wedges are fastened to theside rails of a sash by screws or other similar means to be engaged by arail of the window sash. These arrangements have been objectionable bothbecause the securing means mars the sash and because the stop is securedin a fixed postion and cannot be adjusted to permit opening the windowany amount desired.

It is, therefore, an object of the present invention to provide animproved window stop which may be adjustably positioned to permitopening the window any desired amount.

Another object of this invention is to provide window stop which may bepositioned on a Window to limit the opening of the sash to a desiredamount and which may be removably positioned on the window Withoutmarring the same.

A feature of this invention is the provision of a wedge-shaped windowstop having a finger adapted to be positioned between the side rail of awindow sash and the parting strip between the sashes for holding thestop in position.

A further feature of this invention is the provision of a window stopincluding a metal channel and a resilient wedge-shaped block positionedtherein in which the channel includes a finger adapted to hold the stopin position to be wedged between the sashes of the window to limit theopening of the window.

A still further feature of this invention is the provision of a windowstop including a metal channel with spurs on the sides thereof which diginto the sash to prevent movement of the stop when an attempt is made toforce the window open.

Further objects, features and advantages will be apparent from aconsideration of the following description taken in connection with theaccompanying drawings in which:

Fig. l is a front view of a window on which a stop in accordance withthe invention has been positioned;

Fig. 2 is a cross-sectional view along the lines 2-2 of Fig. 1;

Fig. 3 is a cross-sectional view along the lines 8-3-of Fig. 1;

Figs. 4 and 5 are perspective views of the window stops in accordancewith the invention; and

Figs. 6 and '7 illustrate modified supporting fingers for window stopsin accordance with the invention.

In practicing my invention I provide a window stop including a resilientwedge-shaped block and a metal channel in which the resilient block issupported. The wedge may be supported by being cemented in the channelor by the provision of integral lugs on the channel which can be bent topierce the resilient block. The channel includes a finger which isadapted to be positioned between the side rail of a sash and the partingstrip between the sashes of a window to hold the stop in position. Thisfinger may include a prong to engage the sash or may extend around theedge of the sash to hold the stop in place. The metal channel includesspurs adjacent the top of the wedge which normally do not contact theside rail of the sash but which will be caused to dig into the side railwhen excessive force is applied in an attempt to open the window againstthe stop.

Referring now to the drawings, in Figs. 1, 2 and 3 there is illustrateda window It including an upper sash H and a lower sash it. The uppersash includes side rails l3, 9. top rail [4 and a bottom rail [5. Thelower sash similarly includes side rails [6, a top rail l1 and a bottomrail l8. A look l9 which may be of any standard construction is providedfor locking the sashes when the window is entirely closed. A window stop20 in accordance with the invention is secured to a side rail l3 toprevent opening the sash 12 more than a predetermined amount as will beexplained.

In Figs. 2, 3 and 4 the detailed construction of the window stop 20 aswell as the manner in which it may be used on a window is clearlyillustrated. The stop includes a resilient block 2! which may be made ofrubber or similar resilient material and a metal channel 22 in which theresilient block 2| is secured. The resilient block 2| is wedge-shapedand the metal channel 22' is similarly wedge-shaped with the sides 23thereof covering only a portion of the sides of the resilient wedge. Aplurality of integral lugs 24 are provided on the sides 23 which arebent in such a manner that they are imbedded in the resilient block tosecure the block and channel together as a single unit. A finger 25 isprovided on the channel 22 for holding the stop in position on thewindow. As clearly shown in Fig. 3, thisfinger extends in the spacebetween the side rail l3 of the sash H and the parting strip 26 betweenthe sashes H and I2. In most windows this space is sufiiciently smallthat a finger made of thin sheet metal will be held tightly therebetweenso that the stop will be held in position on the side rail 13 of thesash. The surface of the resilient block 2! engages the surface of thesash and the friction between these members also helps hold the stop inposition. The sides 23 of the=channel also includes spurs 21 positionedat the thick end of the wedge, the spurs having pointed ends whichextend almost to the surface of the resilient block. A clearance of ofan inch has been found satisfactory in models tested.

With the window stop positioned on the upper sash as shown in thedrawings,the amount which the lower sash can be raised is limited asclearly illustrated in Fig. 2. In this figure the lower sash I2 is shownin.dot-dash lines-in the uppermost position towhich it canbe raised withthe window stop 20 in place. It will be noted that the edge. 28 of theupper :rail' I! of the sash- 12 engages the back of themetal channel22..so that the window cannot be further raised. It is apparent that ifthe-window sash l2 is raised further so thattheupper rail I! thereof ispushed against the stop 20 with relatively great force, the resilientblock 2| willbe compressed and the prongs 21 of the channel will diginto the surface of the side rail 13 sovthat the stop actspositivelytoprevent further opening of the sash I 2. -As previously stated, thespurs are normally a slight distance from the side rail l3'as, .forexample, 1 5 of an inch-and will, rthereforanotnormally engage the rail.It=is only in emergencies-when the lower sash is raised withigreatforce. that the. spurs'would be effective to digintojlthe side rail.

It is obvious .that :the stop 201can. be.-positioned in any desiredposition on thesiderail .l3 to thereby limit the opening of the lowersash t0 any..desired point. This makes it possible to raise the windowdifierent amounts as --may be desired depending upon the temperatureoutside. a room. -Thisis important-as the stop is most eifective whenit.is placed so that it will be --engaged by the lower sash* when thesash l 2 is open.

As.is well known,-ini older houses the window sashes normally-fit moreloosely and, therefore, a straight finger as illustrated in Fig. 4 mightnot fittight'enough between'the side rail I3 and the parting strip 26 ofthe window to hold the stop in place. In such cases a prong may bepunchedinlthefinger to engage the side rail l3 of the upper sash II. InFig. 6 a modified finger 30 is shown having a prong 3| therein. It. isnoted that the finger 30 is curved slightly so that the prong will beheld against the side rail of the upper sash when the stop is inposition. As the curved finger 30 provides a spring action, the prong 3|can be very small and still be effective to hold the window'stop inposition on the-window. It has been foundthat a prong only abouttwenty-thousandths of an inch long is adequate tohold the'stop inposition. It is to be pointed out that the prong 3| is not-forthepurpose of holding the stop against movement when it. is engaged by thelower sash but is used only to hold the stop in. position when the stopis not actually in use. When the stop is engaged bythe lower sashthewedging oftheistop between thezsashes locks the stop. imposition, and}prevents further movement of the lower sash as previously described. Asthe prong is very short it does not prevent adjustment of the positionof the stop on the window. Further the prong does not objectionably marthe window, as the prong engages the side rail underneath the partingstrip and any scratching of the side rail caused by the prong will behidden by the parting strip.

In addition to holding the stop in position on the window, the prong 3|on the holding finger 30 is eifective to hold the stop stationary withrespect to the upper sash l I when the sash is moved up and down. Thisprovides an additional advantage as it limits the downward movement ofthe upper sash. Therefore, it is seen that the stop is effective toprevent unintentional lowering of the upper sash II, as when the sash IIis pulled down the stop will engage the top rail I! of the lower sash toprevent further opening of the top sash.

In Fig. 7 there is shown a further modification of the finger of thestop. In this figure the finger 35 is L-shaped-having a portion 36extending around the corner of the side rail l3. Inthis case the stopwould have to be inserted by lowering the upper sash and inserting thestop from the top of the window. .The portion extending around the edgeof the side rail would hear suificiently against the rail to prevent the.stop from slipping out of the window or sliding-with respect thereto. Astop with such a fingerwould also work well in a relatively loosewindowas stated above.

It is to be pointed out that the resilientwedge 2| can be secured to thechannel 22 in any-suitable manner other than by the useoflugs '24. Forexample, the resilient member may "be cemented in the channel as shownin Fig.5. Also the stop may take various other configurations than thatillustrated in the drawing and the parts thereof can be made of anysuitable material, not. being limited to the materials mentioned.

It is seen from the above that I haveprovided a very simple andvinexpensive window stop which may be placed on the upper sash at anydesired position to limit the opening of the lower sash. As theposition. of thestop can be changed as desired, it will be eifective tolimit the openingof the lower sash to the amount desired. The stop doesnotneed to be permanently securedto. the sash and will not mar the sashasthe sash is normally engaged only by the surface of the resilientblock.

While I have described what I consider tobe the preferred embodimentsvof my invention, it is apparent that various modifications and changescan be made therein without departingiromthe intended scope of theinvention as defined in the appended claims.

I claim:

1. In a window including movable upper and lower sashes and a partingstrip betweensaid sashes, a wedge shaped stop for limiting the movementof said lower sash including a finger adapted to be positioned betweensaid upper sash and parting strip for holding said. stop-in any desiredposition on said uppersash, said finger having a pron thereon and beingcurved so that said, prong engages said upper. sash, said stop beingarranged to be wedged between 'said upperand lower sashes when it isengaged-by said lower sash to thereby limit thermovement thereof.

2. A window stop including a Wedge-shaped resilient block and a metalchannel supporting the same, said channel including a finger adapted tobe positioned between the upper sash and the parting strip of a windowto hold said stop in any desired position thereon, said channel beingarranged to be engaged by the lower sash of said window when it israised to prevent said lower sash from being raised more than apredetermined amount.

3. A window stop including a wedge-shaped resilient block and a metalchannel supporting the same, said channel including integral lugs forholding said block thereon and a finger adapted to be positioned betweenthe upper sash and the parting strip of a Window to hold said stop inany desired position thereon, said channel being arranged to be engagedby the lower sash of said window when it is raised to prevent said lowersash from being raised more than a predetermined amount.

4. A window stop including a Wedge-shaped resilient block and a metalchannel supporting the same, said channel including a finger adapted tohold said stop in any desired position on the upper sash of a window,said stop being arranged I to be wedged between the upper and lowersashes of said window when said channel is engaged by said lower sash,said channel including spurs normally held away from said upper sash bysaid resilient block but engaging said upper sash when said lower sashis urged against said stop with great force.

5. In a window including movable upper and lower sashes and a partingstrip between said sashes, a wedge-shaped stop for limiting the movementof said lower sash including a finger adapted to be positioned betweenthe side rail of said upper sash and said parting strip for holding saidstop in any desired position along said side rail, said finger beingcurved and having a prong thereon which is positioned to engagesaid siderail, said curved finger holding said prong in engagement with said siderail so that said stop moves with said upper sash.

6. In a window including movable upper and lower sashes and a partingstrip between said sashes, a wedge-shaped stop for limiting the movementof said lower sash including a finger adapted to be positioned betweenthe side rail of said upper sash and said parting strip for holding saidstop in any desired position along said side rail, said finger beingcurved and havin a prong thereon, said prong being positioned on saidfinger so that it engages the portion of said side rail which is coveredby said parting strip to thereby prevent marring of said upper sash.

ROBERT J. KASIK.

REFERENCES CITED The following references are of record in the of thispatent:

UNITED STATES PATENTS Number Name Date 860,470 Henderson July 16, 19071,111,585 Hunt Sept. 22, 1914 1,463,222 Mologne July 31, 1923

